Maybe they honestly didn't know? Hell, I didn't even know about global warming on Mars until OPs comment..

It’s possible, but beyond a certain point it becomes difficult to extend the benefit of the doubt.

Great write-up, I really appreciate it.

Don't worry, I won't ask any more honest questions about climate change ever again.

I don't mean this in a snarky way at all; if you are interested it is easy enough to educate yourself on the basics. "Read first, question later" is a good approach to this sort of thing, really, as it isn't asking for other peoples effort on the easy stuff.